<!DOCTYPE html>
<html lang="en">

<head>
  <link rel="stylesheet" href="./theme.css">
</head>

<body>
  <p><span>重点介绍</span>渲染流程</p>
  <div>
    <p>green</p>
    <div>red</div>
  </div>
  <script src="common.js"></script>
</body>

</html>